thompson



2 Sheets-Sheet 1.

S.R.THOMPSON. POTTERY MACHINE.

Patefite'dlJune 2 1870.

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2 sheets sheet 2. SLR. THOMPSON.

.POTTERY MACHINE.

1N0.104,795. Patented June 28,1870;

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'sAMiinnn- 'rnonrsoli. or PORTSMOUTH. NEWHAMPSHIRE.

LettersiPa'tentN o.104,795, Zatcd'June 28,1870.

.. a Mlle Schedule referred-ta in. these Letters Patent and mgkiugpart cf the-same.

I, Saarinen ItJTHoMrsoxf, of Portsmouth, in "the county. of Itockingham and State of NewHampshire,

have invented certain Improvements in Machines for making Earthenware, 8pc, of which the following is a specification: y

Eigure'l is a plan view of my invention. Figure2-is a sectional elevation. of the same. Theobject' ofthis invent-ion is ,to' produce amachinc'forthe manufacture of earthenware and vessels froni'all kinds'of plasticmaterial, and

It consists mainly of a'matrix, constructed intwo parts, which partsare held apart from each other when not in operation,"and a plunger, which conforms in shape to thelmatrix both matrix-and plunger being operated -by a series'of camson a-cornmon shaft, in such man-- ner that the'two' parts of the matrix come in contact,

just beforethe plunger enters the same, with the clay or othern a terial, and separate before-the plunger is. a wholly withdrawn, the withdrawal of the. parts being lt-"also. consists in the, combination with .the mat- 'rices'abov e referred tofof a'plunger providedwith a self-actin'g valve, in orderto' admit air to the inside of the newly-formed vessel, and prevent the same'fr'om clinging 'touthe 'end' of the plungerbv atmospheric pressure.

The details of construction and method of operation will'be more fully described hereinafter." i

In the drawing A represents the bed or table of the machine, which is supported by leg's (r a.

Onkone side of table A'is locatedthe horizontal. matrix," which consists of two blocks B 'B, which hav t-he half-molds-B' on their innersides, and are held in position-relatively by the rods b b, which are rigidly attached to onep'art, B, and slide through theoth'er. ThepjartsiBB are connected to tcggle-joints'G,

the'outeiwends of which are attached by slots and The central links 0' of joints Caro attached to rods or bars c, which extend across table A hetweenguides c, and project'beyond.

. D Drepre'sent pulleys, jonrnaled below table A, over i which pass cords dd. whichareattached to rods 0, and have weights E on their lower ends, which weights keep the-f dlsjlc lrawn back to theirutm'ost extent, and holdthe arts BB apart, as shown in fig. 1.

r p E represents a'"horizontal plunger, provided witha square h ea'd- Efl-which plungeris, in a direct line with v v B when closed,- 1 V The plunger F; slides between thewaysF, and is 'connectedibycords f with weight G, bymeans of lwhichg the plunger is held in the position shown.

, The plunger. is provided with the, transverse orifice g, from which runs the longitudinal air-passageg', in

which is the stem Hot valve H, which constitutes the .endot plunger 1!.

- I representsan inclined spout or trouglnwhich -oarlies the material to bein'olded 'into a right-angle shaped receiver 1', through which plunger 11 passes.

The receiver 1' is provided with a concave bottom,

' corresponding to the shape of plunger. l,andhas a circular orifice, through which the latter passes.-

K represents'a horizontal baron the standard It,

which bar or projection enters the matrix B 'at' the opposite end from plunger I ,.and forms a concavity int-he bottom-of the vessel molded. Lnrepresents'an opening in the table A,. under matrix B, through which opening the vessels fall.

M is an endless-band, passing around rollers N below s table A, which band is operated by belt M passing from driving-shaft around pulley M,

0 represents a horizontal shaft, journaled in projections a afof table A, on which shaft are located the driving-pulleyl, cams R S S,.'and pulley T, which operate the various parts of the 'machine.

V Y represent arms, which are pivoted by right and left screws to thesides of table A, said screws healing-against the outermost links ofj'oints G,'which are secured to table A through slots, and admit of a a slight lateral mot-ion,

The free ends of arms V bear upon the lower sidesof cams S, and are caused to bearagainst the same hyweightsWw Motion being imparted to pulley P, the cams R and S bear-.uponthe head E of plunger F and the ends of rods 0, and propelthe same toward the opposite end of the machine. i

The rods c, l)y means oft-hetruckle joints 0, drive, the blocks B B-toget-lrerjustas the end of the plunger,

with a lump of-clay, enters it, while the arms V V,

being depressed by.=cams S','turn the right and left screws against the outer links of joiutsG, and give the straightened joints an additional pressure against blocks 13, andsct the same firmly together, while the plunger enters to its-utmost extent and forces the plastic material into every part of the mold.

When the plunger has enteredto its utmost extent I it fiillsback slightly-into a depression, U, in the pe riphery of the cam 'R,'thereby loosening it from the vessel before the opening of matrix B, and slightly opening valve H by adhesion tothe material, while .the' air, rushing through channel g, prevents the. ad-

hesion'ot' the material to the plunger; -Meanwhile the cam-S, not extendin'gso far as cain R, (as shown "in, dotted lines in fig. 2,) release rods 0, which are drawn back by weights E into their former position, thereby separating blooksB, and the cam R releasing plunger 11 immediately alter it is withdrawn by weight G, thus ,allowing' the vessel to dropthrough aperture L upon band M; which carries the same from the machine to a convenient place for removal.

1 The matrix B, plunger E, and projection K can be readily removed, and different sizes substituted.

The clay or other material is formed-in suitable cakes, which roll in succession down the spout I, and at every withdrawal of plunger F a' cake rolls into receiver I, in front of the same, and is ready for thenext operation.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. The. plunger 13, provided with self-acting valve H, in combination with matrixB, weight G, and cam R, with its depression U, substantially as described. 2. The arms V V, provided with rightand left screws, in combination with joiiit'sO and cams S,

substantiallyas described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL It. THOMPSON.

Witnesses:

CARROLL D. WRIGHT, Onanms F. BROWN. 

